standard aspheric designs - ams technologies · 2019. 11. 19. · volumes, lightpath has perfected...
TRANSCRIPT
STANDARD ASPHERIC DESIGNS
H I G H - P E R F O R M A N C E O P T I C S F O R A VA R I E T Y O F A P P L I C AT I O N S
• Benefit from the quality and performance of all-glass aspheres• Easily transition from prototype phase to high-volume production • Customize to fit your application or choose from over 100 standard aspheric designs
• RoHS-compliant, ultra-high quality glass
Aspheric lenses are known for their optimal performance but the expense of fabricating them has inhibited their use. LightPath’s glass molding technology has enabled high volume production of aspheric optics while maintaining the highest quality at an affordable price. Because molding is the most consistent and economical way to produce aspheres in large volumes, LightPath has perfected this method to offer the most precise aspheric lens available. LightPath offers standard and custom-made lenses, all designed by our expert optical design engineers.
Geltech Asphere Performance Parameters
Lens CodeFocal
Length (mm)
Numerical Aperture
Outer Diameter
(mm)
Working Distance
(mm)Page
355631 0.390.55 / 0.13
1.200.284 / 1.902
10
355070 0.430.06 / 0.66
1.205.00 / 0.270
10
355485 0.550.50 / 0.10
1.000.30 / 3.030
10
355487 0.550.50 / 0.11
1.000.276 / 2.940
10
355536 0.60 0.60 1.24 0.22 10
355880 0.70 0.60 2.50 0.33 10
355840 0.75 0.47 3.00 0.43 10
355915 0.800.12 / 0.50
1.303.931 / 0.669
10
355960 1.00 0.62 1.824 0.24 10
355200 1.140.43 / 0.124
2.40 4.81 10
355201 1.140.124 / 0.430
4.931.129 / 4.809
11
354450 1.160.30 / 0.30
1.801.67 / 1.67
11
357786 1.41 0.502 2.00 1.20 11
356785 1.42 0.62 2.75 0.86 11
354140 1.45 0.58 2.40 0.81 11
354710 1.49 0.53 2.65 1.02 11
355950 1.81 0.37 3.00 1.089 11
Geltech Asphere Performance Parameters
Lens CodeFocal
Length (mm)
Numerical Aperture
Outer Diameter
(mm)
Working Distance
(mm)Page
355755 1.940.15 / 0.15
1.703.570 / 3.570
11
355150 2.00 0.5 3.00 1.4 11
355151 2.00 0.504 3.00 1.029 11
355410 2.51 0.20 1.805 1.84 12
355615 2.51 0.201 2.05 1.731 12
355945 2.51 0.317 3.00 1.761 12
356300 2.54 0.66 4.00 1.55 12
355160 2.73 0.55 4.00 2.37 12
355390 2.75 0.55 4.50 2.16 12
355440 2.760.52 / 0.26
4.707.090 / 2.713
12
355392 2.80 0.6 4.00 1.5 12
355660 2.976 0.52 4.00 1.56 12
354330 3.10 0.7 6.325 1.8 13
355330 3.10 0.77 6.325 1.59 13
353515 3.50 0.4 3.00 2.3 13
355545 3.50 0.38 3.50 2.3 13
355970 3.70 0.21 1.80 3.030 13
STANDARD ASPHERIC DESIGNS
Geltech Asphere Performance Parameters
Lens CodeFocal
Length (mm)
Numerical Aperture
Outer Diameter
(mm)
Working Distance
(mm)Page
352080 3.89 0.547 6.325 2.71 13
357775 4.00 0.6 6.325 2.4 13
357610 4.00 0.616 6.325 2.691 13
357765 4.00 0.61 6.325 2.37 13
355940 4.02 0.17 3.00 3.37 13
354340 4.03 0.64 6.325 2.68 14
355022 4.47 0.47 5.42 3.08 14
354350 4.50 0.4 4.70 2.2 14
354996 4.50 0.30 3.00 3.46 14
355230 4.50 0.55 6.325 3.08 14
354453 4.60 0.5 6.00 2.7 14
354430 5.00 0.15 2.00 4.37 14
354105 5.50 0.6 7.20 3.7 14
354130 6.00 0.21 3.00 4.90 14
354550 6.10 0.18 2.79 4.87 14
354171 6.20 0.30 4.70 4.10 15
355110 6.20 0.4 7.20 3.5 15
353525 6.70 0.5 6.325 4.9 15
354115 6.80 0.5 9.20 4.3 15
Geltech Asphere Performance Parameters
Lens CodeFocal
Length (mm)
Numerical Aperture
Outer Diameter
(mm)
Working Distance
(mm)Page
355375 7.50 0.3 6.51 5.8 15
354240 8.00 0.5 9.936 5.9 15
354060 9.60 0.30 6.325 8.13 15
354306 9.90 0.3 6.335 8.4 15
354125 10.00 0.5 11.00 7.8 15
355561 10.00 0.6 15.00 7.0 15
354220 11.00 0.3 7.20 7.9 16
354061 11.00 0.24 6.325 9.56 16
354062 11.00 0.24 6.00 9.66 16
354064 11.00 0.2 6.00 9.3 16
355397 11.00 0.3 7.20 10.0 16
354058 12.00 0.22 6.325 10.57 16
354057 13.00 0.20 6.325 11.58 16
354560 13.86 0.18 6.325 12.11 16
354059 14.00 0.19 6.325 12.63 16
354120 15.04 0.15 4.985 13.19 16
354260 15.29 0.16 6.50 13.98 17
354280 18.40 0.15 6.50 17.11 17
354850 22.00 0.13 6.325 20.41 17
PRODUCT DESCRIPTION
355631
Design Wavelength 1310
Focal Length 0.39
Numerical Aperture 0.55/0.13
Clear Aperture 0.37/0.53
355070
Design Wavelength 1550
Focal Length 0.43
Numerical Aperture 0.06/0.66
Clear Aperture 0.62/0.47
355487
Design Wavelength 1500
Focal Length 0.55
Numerical Aperture 0.50/0.11
Clear Aperture 0.35/0.68
355485
Design Wavelength 1550
Focal Length 0.55
Numerical Aperture 0.50/0.10
Clear Aperture 0.35/0.66
355536
Design Wavelength 1310
Focal Length 0.60
Numerical Aperture 0.60
Clear Aperture 0.72/0.35
355960
Design Wavelength 1500
Focal Length 1.00
Numerical Aperture 0.62
Clear Aperture 1.20/0.39
355915
Design Wavelength 1550
Focal Length 0.80
Numerical Aperture 0.12/0.50
Clear Aperture 1.00/0.77
355880
Design Wavelength 1550
Focal Length 0.70
Numerical Aperture 0.60
Clear Aperture 0.84/0.49
355840
Design Wavelength 940
Focal Length 0.75
Numerical Aperture 0.47
Clear Aperture 0.71/0.46
355200
Design Wavelength 1300
Focal Length 1.14
Numerical Aperture 0.43/0.124
Clear Aperture 1.24/1.24
PRODUCT DESCRIPTION
355201
Design Wavelength 1300
Focal Length 1.14
Numerical Aperture 0.124
Clear Aperture 1.24/1.24
354450
Design Wavelength 980
Focal Length 1.16
Numerical Aperture 0.30
Clear Aperture 1.14/1.14
357786
Design Wavelength 488
Focal Length 1.41
Numerical Aperture 0.502
Clear Aperture 1.42/1.28
356785
Design Wavelength 488
Focal Length 1.42
Numerical Aperture 0.62
Clear Aperture 1.70/1.18
355950
Design Wavelength 1550
Focal Length 1.81
Numerical Aperture 0.37
Clear Aperture 1.35/0.87
354710
Design Wavelength 1550
Focal Length 1.49
Numerical Aperture 0.53
Clear Aperture 1.50/1.15
354140
Design Wavelength 780
Focal Length 1.45
Numerical Aperture 0.58
Clear Aperture 1.60/1.14
355755
Design Wavelength 1577
Focal Length 1.94
Numerical Aperture 0.15/0.15
Clear Aperture 1.10/1.10
355150
Design Wavelength 780
Focal Length 2.00
Numerical Aperture 0.5
Clear Aperture 2.20/2.20
355151
Design Wavelength 780
Focal Length 2.00
Numerical Aperture 0.504
Clear Aperture 2.00/1.09
PRODUCT DESCRIPTION
355410
Design Wavelength 1550
Focal Length 2.51
Numerical Aperture 0.20
Clear Aperture 1.01/0.75
355390
Design Wavelength 830
Focal Length 2.75
Numerical Aperture 0.55
Clear Aperture 3.60/3.24
355160
Design Wavelength 780
Focal Length 2.73
Numerical Aperture 0.55
Clear Aperture 3.00/2.44
356300
Design Wavelength 405
Focal Length 2.54
Numerical Aperture 0.66
Clear Aperture 3.30/2.50
355440
Design Wavelength 980
Focal Length 2.76
Numerical Aperture 0.52/0.26
Clear Aperture 4.12/4.12
355330
Design Wavelength 830
Focal Length 3.10
Numerical Aperture 0.77
Clear Aperture 5.00/3.79
355392
Design Wavelength 830
Focal Length 2.80
Numerical Aperture 0.6
Clear Aperture 3.60/2.50
355660
Design Wavelength 1550
Focal Length 2.976
Numerical Aperture 0.52
Clear Aperture 3.60/2.35
355615
Design Wavelength 1550
Focal Length 2.51
Numerical Aperture 0.201
Clear Aperture 1.01/0.71
355945
Design Wavelength 1550
Focal Length 2.51
Numerical Aperture 0.317
Clear Aperture 1.60/1.18
PRODUCT DESCRIPTION
354330
Design Wavelength 830
Focal Length 3.10
Numerical Aperture 0.7
Clear Aperture 5.00/3.84
355970
Design Wavelength 1550
Focal Length 3.70
Numerical Aperture 0.21
Clear Aperture 1.56/1.30
355545
Design Wavelength 515
Focal Length 3.50
Numerical Aperture 0.38
Clear Aperture 2.71/1.88
352080
Design Wavelength 780
Focal Length 3.89
Numerical Aperture 0.547
Clear Aperture 4.29/4.00
353515
Design Wavelength 515
Focal Length 3.50
Numerical Aperture 0.4
Clear Aperture 2.70/1.95
357610
Design Wavelength 410
Focal Length 4.00
Numerical Aperture 0.616
Clear Aperture 4.80/3.39
357775
Design Wavelength 408
Focal Length 4.00
Numerical Aperture 0.6
Clear Aperture 4.80/3.45
357765
Design Wavelength 488
Focal Length 4.00
Numerical Aperture 0.61
Clear Aperture 4.80/3.43
355940
Design Wavelength 1550
Focal Length 4.02
Numerical Aperture 0.17
Clear Aperture 1.37/1.16
355330
Design Wavelength 830
Focal Length 3.10
Numerical Aperture 0.77
Clear Aperture 5.00/3.61
PRODUCT DESCRIPTION
355230
Design Wavelength 780
Focal Length 4.50
Numerical Aperture 0.55
Clear Aperture 5.07/3.93
354996
Design Wavelength 634
Focal Length 4.50
Numerical Aperture 0.30
Clear Aperture 2.70/2.15
354350
Design Wavelength 980
Focal Length 4.50
Numerical Aperture 0.4
Clear Aperture 3.70/2.05
354430
Design Wavelength 1550
Focal Length 5.00
Numerical Aperture 0.15
Clear Aperture 1.60/1.40
354105
Design Wavelength 633
Focal Length 5.50
Numerical Aperture 0.6
Clear Aperture 6.00/4.96
354130
Design Wavelength 1550
Focal Length 6.00
Numerical Aperture 0.21
Clear Aperture 2.50/2.10
354550
Design Wavelength 1550
Focal Length 6.10
Numerical Aperture 0.18
Clear Aperture 2.20/1.79
354453
Design Wavelength 655
Focal Length 4.60
Numerical Aperture 0.5
Clear Aperture 4.80/3.38
354340
Design Wavelength 685
Focal Length 4.03
Numerical Aperture 0.64
Clear Aperture 5.10/3.77
355022
Design Wavelength 780
Focal Length 4.47
Numerical Aperture 0.47
Clear Aperture 4.20/2.77
PRODUCT DESCRIPTION
354171
Design Wavelength 633
Focal Length 6.20
Numerical Aperture 0.30
Clear Aperture 3.70/2.72
354115
Design Wavelength 633
Focal Length 6.80
Numerical Aperture 0.5
Clear Aperture 7.00/5.30
355110
Design Wavelength 780
Focal Length 6.20
Numerical Aperture 0.4
Clear Aperture 5.00/2.93
353525
Design Wavelength 515
Focal Length 6.70
Numerical Aperture 0.5
Clear Aperture 5.75/4.82
354060
Design Wavelength 633
Focal Length 9.60
Numerical Aperture 0.30
Clear Aperture 5.20/5.13
354240
Design Wavelength 780
Focal Length 8.00
Numerical Aperture 0.5
Clear Aperture 8.00/6.94
355375
Design Wavelength 780
Focal Length 7.50
Numerical Aperture 0.3
Clear Aperture 4.54/3.61
354306
Design Wavelength 650
Focal Length 9.90
Numerical Aperture 0.3
Clear Aperture 5.20/4.57
354125
Design Wavelength 633
Focal Length 10.00
Numerical Aperture 0.5
Clear Aperture 10.00/9.12
355561
Design Wavelength 850
Focal Length 10.00
Numerical Aperture 0.6
Clear Aperture 12.50/10.53
PRODUCT DESCRIPTION
354064
Design Wavelength 633
Focal Length 11.00
Numerical Aperture 0.2
Clear Aperture 5.20/4.59
354062
Design Wavelength 633
Focal Length 11.00
Numerical Aperture 0.24
Clear Aperture 5.20/4.68
354058
Design Wavelength 633
Focal Length 12.00
Numerical Aperture 0.22
Clear Aperture 5.20/5.20
354057
Design Wavelength 633
Focal Length 13.00
Numerical Aperture 0.20
Clear Aperture 5.20/5.20
354560
Design Wavelength 650
Focal Length 13.86
Numerical Aperture 0.18
Clear Aperture 5.10/4.54
354120
Design Wavelength 670
Focal Length 15.04
Numerical Aperture 0.15
Clear Aperture 4.50/4.00
354059
Design Wavelength 633
Focal Length 14.00
Numerical Aperture 0.19
Clear Aperture 5.20/5.20
355397
Design Wavelength 670
Focal Length 11.00
Numerical Aperture 0.3
Clear Aperture 6.68/6.24
354061
Design Wavelength 633
Focal Length 11.00
Numerical Aperture 0.24
Clear Aperture 5.20/4.63
354220
Design Wavelength 633
Focal Length 11.00
Numerical Aperture 0.3
Clear Aperture 5.50/4.07
PRODUCT DESCRIPTION
354850
Design Wavelength 670
Focal Length 22.00
Numerical Aperture 0.13
Clear Aperture 5.50/5.13
354280
Design Wavelength 780
Focal Length 18.40
Numerical Aperture 0.15
Clear Aperture 5.50/5.15
354260
Design Wavelength 780
Focal Length 15.29
Numerical Aperture .016
Clear Aperture 5.00/4.61
Infrared Laser Collimation Lenses
Part Number DesignWavelength
Numerical Aperture
Clear Aperture
Effective Focal Length
OuterDiameter
WorkingDistance
CenterThickness
390036 2.5µm 0.56 5.0mm 4.0mm 6.5mm 3.05mm 2.50mm
390042 2.5µm 0.23 10.0mm 19.04mm 12.5mm 16.63mm 5.00mm
390017 2.7µm 0.72 2.6mm 1.50mm 3.5mm 1.24mm 1.10mm
390028 4.1µm 0.56 7.6mm 5.95mm 8.0mm 5.0mm 2.50mm
390029 4.2µm 0.86 2.5mm 0.91mm 3.0mm 0.66mm 0.90mm
390093 7.8µm 0.71 5.0mm 3.0mm 6.5mm 2.35mm 2.62mm
390010 9.2µm 0.83 3.0mm 1.47mm 4.5mm 0.63mm 2.18mm
390037 9.2µm 0.85 4.0mm 1.87mm 5.5mm 0.72mm 3.00mm
390137 9.5µm 0.85 4.0mm 1.87mm 6.3mm 0.72mm 3.00mm
H I G H P E R F O R M A N C E A S P H E R E S F O R L A S E R C O L L I M AT I O N I N T H E I N F R A R E D
• High numerical aperture for maximum collection effi ciency
• Compact, single lens design
• Diffraction limited performance
• RoHS Compliant
To learn more about QCL lenses, request a
copy of LightPath’s Infrared Brochure
DID YOUKNOW?
4
CHOOSING THE RIGHT ASPHERIC LENS
Due to the way that the laser cavity is constructed in edge emitting diode lasers, light is emitted in a diverging, elliptical geometry - so the divergence is typically specified in both the x and y axes separately. The axis with the larger divergence is called the “fast axis” and the axis with the smaller divergence is called the “slow axis”.
When selecting a lens to collimate the laser, first consider the numerical aperture of the lens. If the application requires a high amount of the laser light to be coupled through the system, a lens with a high enough NA must be chosen. The NA of a lens is a measure of the maximum amount of divergence that the lens can capture from the laser. Ideally, a lens should be used that has an NA higher than the NA of the laser’s fast axis. If not, the laser will “clip” the lens causing some of the light to be wasted. To convert the NA to the divergence angle (and vice-versa), use this formula.
NA = n • sin (ϕ)
In most cases n = 1 since the NA of the laser is defined in air. Therefore, solving for the equation is simplified to:
(ϕ) = sin-1 (NA)
It is important to note that is the half angle of the divergence cone and is given at the marginal ray (not 1/e2 or half width half max). After the minimum NA is determined, next consider what beam diameter is preferred. Although ray-tracing is necessary toprecisely determine the beam diameter for a given NA source with a particular lens, it can be approximated with the following formula.
Beam Diameter 2 • EFL • NA
Where EFL is the effective focal length of the lens and NA is the numerical aperture of the source (not the NA of the lens).
Remember that most edge emitting diodes are elliptical, so the beam diameter will be different in the x-axis versus the y-axis. Use the formula above to calculate the beam diameter in both axes to determine the shape of the collimated, elliptical beam..
Important Note:
Some laser manufacturers give the NA of the source in different terms, such as half width half max (50% point) or 1/e2 (87% point). Whatever type of number is entered into the formula for the NA of the source will be the same type of number given for the beam diameter. For example, if the half width half max NA for a laser is used with the above formula, you will get the full width half max beam diameter. There is no simple way to convert from a half max number or a 1/e2 beam diameter to a full beam diameter for a specific source because it depends on the intensity profile of the source itself. A reasonable approximation, though, for most edge emitting diode lasers is to assume a Gaussian beam profile. Using this beam profile, you can convert the beam diameters as follows:
1. To convert a full width half max beam diameter to a full beam diameter (i.e. 99% power contained), multiply the diameter by 2.576.
2. To convert a 1/e2 beam diameter to a full beam diameter, (i.e. 99% power contained), multiply the diameter by 1.517.
D I O D E C O L L I M AT I O N
~=
DID YOUKNOW?
If you don’t see the lens you need in our catalog, we can custom build it.
Our engineering team can manufacture at off-the-shelf lens prices that you won’t find elsewhere.
5
CHOOSING THE RIGHT ASPHERIC LENS
F I B E R C O U P L I N GAnother common use for aspheric lenses is to couple laser light into optical fibers. Choosing the right lens or lenses to do the coupling is important to maintain high efficiency in the optical system. The guide below is intended to show how best to do this while using off-the-shelf components. This guide assumes that the input laser light has already been collimated (not diverging) and the fiber is multimode (single fiber requires more extensive modeling for optimum coupling efficiency). When selecting a lens to focus light into a fiber, first consider what focal length lens is needed. Let’s revisit the formula given previously.
Beam Diameter 2 • EFL • NA
Solving for EFL it becomes:
Where NA is the numerical aperture of the fiber that is used for the coupling. It is important to note that the EFL value that is calculated above is the minimum EFL needed to couple the light completely into the fiber. Longer EFL lenses can be used, but the spot on the fiber tip will become larger. Therefore, it is best practice to use the shortest EFL lens possible that is larger than the minimum value specified above.
Example: Suppose you wish to focus a collimated beam with a full beam diameter of 2.0mm into a 50 micron multimode fiber.
The fiber NA given by the manufacturer is approximately 0.20. Fiber NA is normally given at the 99% power point (as opposed to 1/e2 or half max), we can use the full beam diameter given.
So it is best to look for a lens with an EFL of at least 5.0mm and a clear aperture 2.0mm (in order to capture the full collimated beam). One might consider the 354430 lens for its 5mm EFL (at 1550nm), but its 1.5mm clear aperture will not capture the full collimated beam. A better choice might be the 354550 lens. Its 6.10mm EFL at 1550nm becomes 5.94mm at 660nm. The lens also has a large enough clear aperture (2.2mm) to capture the entire input beam.
Beam Diameter 2 • NA
EFL ~=~=
~=
Beam Diameter 2.0 2 NA 2 • 0.2
EFL 5.0mm~= ~= ~=
STANDARD GLASS TYPES
O P T I M U M P E R F O R M A N C E W I T H O P T I M U M L E N S E S
LensCode Glass Type
RefractiveIndex, nd
Abbé Number, νd
CTE dn/dT Equivalent Glasses RoHS ✓ Compliance
352xxx ECO-550 1.603 50.02 11.62 x 10-6/°C 2.39 x 10-6/°C N/A ✓
353xxx H-FK61 1.495 81.20 13.8 x 10-6/°C -6.6 x 10-6/°C Hoya-FCD1 & Ohara S-FPL51 ✓
354xxx D-ZK3 1.586 60.71 7.6 x 10-6/°C 3.2 x 10-6/°C Hoya M-BACD5N & Ohara L-BAL35 ✓
355xxx D-ZLaF52La 1.806 40.79 6.9 x 10-6/°C 6.5 x 10-6/°COhara L-LAH53, Hoya M-NBFD130, Sumita
K-VC89 ✓
356xxx L-LAL12 1.674 55.00 6.9 x 10-6/°C 6.5 x 10-6/°C CDGM D-Lak5 ✓
357xxx D-LaK6 1.690 52.65 6.9 x 10-6/°C 6.5 x 10-6/°C Hoya M-LAC130 & Ohara L-LAL13 ✓
D-ZLaF52Laà355xxx Series of LensesThis glass has a higher index of refraction than ECO-550 and is best suited for those applications that require a higher numerical aperture and need to maintain RoHS compliance.
D-ZK3à354xxx Series of LensesThis glass is best suited for those applications that require a low cost glass for higher volume manufacturing.
ECO-550à352xxx Series of LensesEuropean and Japanese environmental regulations have restricted the use of lead and other hazardous substances in optical components. ECO-550 is an environmentally friendly alternative to conventional moldable glasses.
S P E C I A LT Y G L A S S T Y P E SThere are well over 200 available moldable glass types. LightPath focuses on a select few types in order to provide our customers the fastest lead times at the lowest cost. Our standard selections meet most of our customers’ needs but sometimes that special application requires a unique glass. LightPath can provide these glasses, starting with material qualifi cation.
D-LaK6à357xxx Series of LensesThese glasses have been selected for their outstanding UV & Blue transmission properties.
H-FK61à353xxx Series of LensesThese glasses have been selected for their outstanding UV & Green transmission properties.
L-LAL12à356xxx Series of Lenses
Standard Glass Internal Transmission Curves (5mm thickness)
21www.lightpath.com
STANDARD ANTI-REFLECTIVE COATINGS
LightPath offers a variety of multilayer broadband coatings to reduce the back refl ection from a nominal 6% for uncoated lenses. The choice of which AR coating is appropriate depends on the type of glass the lens is made from and the wavelength at which the lens will be used.
* LightPath’s rigorous qualifi cation process ensures all standard coatings will pass the abrasion and adhesion resistance requirements of ISO+9211-4-196.
S t a n d a rd C o a t i n g s *Lens Series Coating λ Range (nm) Reflectivity
352xxx, 353xxx, 354xxx, 355xxx MLBB-A 350 - 700 Ravg 0.50%
352xxx, 354xxx, 355xxx MLBB-B 600 - 1050 Rmax< 1.00%
352xxx, 354xxx, 355xxx MLBB-C 1050 - 1600 Rmax< 1.00%
355xxx MLBB-Q 1300 - 1700 Rmax< 0.25%
356xxx, 357xxx UVA 350 - 500 Rmax< 1.00%
<
Typical Coating Curves
B Coating
575 800 850650600 900 950700 750 1000 1050 11000
0.2
0.6
0.4
0.8
1.0
Wavelength (nm)
)
C Coating
160014001300 1700150011001000 1200
Wavelength (nm)
)
0
0.2
0.6
0.4
0.8
1.0
Q Coating
Wavelength (nm)
Re�e
ctan
ce (%
)
1550 1600140013501300 1650 17001450 15000
0.2
0.6
0.4
0.8
1.0
A Coating
600 650550500450 625575525475
Wavelength (nm)
Re�e
ctan
ce (%
)
0
0.2
0.6
0.4
0.8
1.0
400 425375350 675 700
UVA Coating
STANDARD ANTI-REFLECTIVE COATINGS